How to convert JavaScript snippet to TypeScript [closed]

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How can I convert the code from Javascript to typescript

const ORIENTATIONS = {
  single: () => 0,
  'right angled': (tag) => {
    return hashWithinRange(tag.text) * 90;
  },
  multiple: (tag) => {
    return hashWithinRange(tag.text) * 15 - 90;
  },
};

And I'm getting this error:

 const ORIENTATIONS: {
    single: () => number;
    'right angled': (tag: any) => number;
    multiple: (tag: any) => number;
}

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type '{ single: () => number; 'right angled': (tag: any) => number; multiple: (tag: any) => number; }'. No index signature with a parameter of type 'string' was found on type '{ single: () => number; 'right angled': (tag: any) => number; multiple: (tag: any) => number; }'.ts(7053)

actually, any JavaScript code is also technically valid TypeScript code (even though, by default, compiler could complain). What is your actual error? — Pac0
– Pac0, Commented Apr 27, 2020 at 5:44

Hien Nguyen · Accepted Answer · 2020-04-27 05:47:58Z

0

You can create one class as

export class AppComponent {
  name = "Angular";

  ORIENTATIONS = {
    single: () => 0,
    "right angled": tag => {
      return this.hashWithinRange(tag.text) * 90;
    },
    multiple: tag => {
      return this.hashWithinRange(tag.text) * 15 - 90;
    }
  };

  hashWithinRange(value) {
    return 45;
  }
}

Demo https://stackblitz.com/edit/angular-qm5wdc

answered Apr 27, 2020 at 5:47

Hien Nguyen

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